Как создать поисковый скрипт для ссылок на изображения с подписями, используя jQuery - PullRequest
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Как создать поисковый скрипт для ссылок на изображения с подписями, используя jQuery

0 голосов
/ 13 июня 2019

Я пытаюсь создать поисковый скрипт, используя jQuery. Я пытаюсь настроить в окне поиска фотографии на основе их соответствующих заголовков, а фотографии должны фильтроваться в режиме реального времени по мере ввода, и отображаемые фотографии должны соответствовать поиску. Вот мой код HTML и Javascript: 

<!doctype html>
<html lang="en">
    <head>
        <meta charset="utf-8">
        <title>Photo Gallery</title>
        <meta name="viewport" content="width=device-width, initial-scale=1">
        <link rel="stylesheet" href="css/normalize.css">
        <link rel="stylesheet" href="js/lightbox/css/lightbox.css">
        <link href="https://fonts.googleapis.com/css?family=Roboto+Mono&display=swap" rel="stylesheet">
        <link rel="stylesheet" href="css/main.css">
    </head>
    <body>
        <div class=container>

            <!-- <form action="form-field"> -->
            <input type="search" id="site-search" placeholder="Search(16pt)">
            <!-- </form> -->

            <div class="images-container">
                <a href= "photos/01.jpg" data-alt="Hay Bales"data-lightbox="image-1" data-title="I love hay bales. Took this snap on a drive through the countryside past some straw fields."><img src="photos/thumbnails/01.jpg" alt="Image 1"></a>
                <a href= "photos/02.jpg" data-alt ="Lake"data-lightbox="image-1" data-title="The lake was so calm today. We had a great view of the snow on the mountains from here."><img src="photos/thumbnails/02.jpg" alt="Image 2"></a>
                <a href= "photos/03.jpg" data-alt="Canyon"data-lightbox="image-1" data-title="I hiked to the top of the mountain and got this picture of the canyon and trees below."><img src="photos/thumbnails/03.jpg" alt="Image 3"></a>
                <a href= "photos/04.jpg" data-alt="Iceberg"data-lightbox="image-1" data-title="It was amazing to see an iceberg up close, it was so cold but didn’t snow today. "><img src="photos/thumbnails/04.jpg" alt="Image 4"></a>
                <a href= "photos/05.jpg" data-alt="Desert"data-lightbox="image-1" data-title="The red cliffs were beautiful. It was really hot in the desert but we did a lot of walking through the canyons."><img src="photos/thumbnails/05.jpg" alt="Image 5"></a>
                <a href= "photos/06.jpg" data-alt="Fall"data-lightbox="image-1" data-title="Fall is coming, I love when the leaves on the trees start to change color."><img src="photos/thumbnails/06.jpg" alt="Image 6"></a>
                <a href= "photos/07.jpg" data-alt="Plantation"data-lightbox="image-1" data-title="I drove past this plantation yesterday, everything is so green!"><img src="photos/thumbnails/07.jpg" alt="Image 7"></a>
                <a href= "photos/08.jpg" data-alt="Dunes"data-lightbox="image-1" data-title="My summer vacation to the Oregon Coast. I love the sandy dunes!"><img src="photos/thumbnails/08.jpg" alt="Image 8"></a>
                <a href= "photos/09.jpg" data-alt="Countryside Lane"data-lightbox="image-1" data-title="We enjoyed a quiet stroll down this countryside lane."><img src="photos/thumbnails/09.jpg" alt="Image 9"></a>
                <a href= "photos/10.jpg" data-alt="Sunset"data-lightbox="image-1" data-title="Sunset at the coast! The sky turned a lovely shade of orange."><img src="photos/thumbnails/10.jpg" alt="Image 10"></a>
                <a href= "photos/11.jpg" data-alt="Cave"data-lightbox="image-1" data-title="I did a tour of a cave today and the view of the landscape below was breathtaking."><img src="photos/thumbnails/11.jpg" alt="Image 11"></a>
                <a href= "photos/12.jpg" data-alt="Blueballs"data-lightbox="image-1" data-title="I walked through this meadow of bluebells and got a good view of the snow on the mountain before the fog came in."><img src="photos/thumbnails/12.jpg" alt="Image 12"></a>
            </div>

        </div>
        <script src="js/jquery-3.4.1.min.js"></script>
        <script src="js/lightbox/js/lightbox-plus-jquery.min.js"></script>
        <script src="js/main.js"></script>
    </body>
</html>

$("#site-search").keyup(function() {
    let searchInput=$("#site-search").val().toLowerCase();
    $('a').each(function(element){
        let caption=$(element).attr('data-title').toLowerCase();
        if (caption.includes(searchInput)) {
            $(element).show();
        }
    });
});

По какой-то причине я получаю сообщение о том, что toLowercase не определен. Это почему? Не могли бы вы, ребята, внести предложения в мой код, чтобы исправить ошибку? Я немного застрял и не знаю, на правильном ли я пути или нет.

1 Ответ

1 голос
/ 13 июня 2019

Первый параметр each не является объектом.Это индекс.Вы можете использовать this (или добавить второй параметр) вместо element variable. 

$("#site-search").keyup(function() {
  let searchInput = $("#site-search").val().toLowerCase();
  $('.images-container > a').each(function(index, element) {
    let caption = $(element).attr('data-title').toLowerCase();

    if (caption.includes(searchInput)) {
      $(element).show();
    } else {
      $(element).hide(); //Hide elements that dont include the search word.
    }
  });
});


$("#site-search").keyup(function() {
  let searchInput = $("#site-search").val().toLowerCase();
  $('.images-container > a').each(function(index, element) {
    let caption = $(element).attr('data-title').toLowerCase();

    if (caption.includes(searchInput)) {
      $(element).show();
    } else {
      $(element).hide(); //Hide elements that dont include the search word.
    }
  });
});
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<input type="search" id="site-search" placeholder="Search(16pt)">

<div class="images-container">
  <a href="photos/01.jpg" data-alt="Hay Bales" data-lightbox="image-1" data-title="I love hay bales. Took this snap on a drive through the countryside past some straw fields."><img src="photos/thumbnails/01.jpg" alt="Image 1"></a>
  <a href="photos/02.jpg" data-alt="Lake" data-lightbox="image-1" data-title="The lake was so calm today. We had a great view of the snow on the mountains from here."><img src="photos/thumbnails/02.jpg" alt="Image 2"></a>
  <a href="photos/03.jpg" data-alt="Canyon" data-lightbox="image-1" data-title="I hiked to the top of the mountain and got this picture of the canyon and trees below."><img src="photos/thumbnails/03.jpg" alt="Image 3"></a>
  <a href="photos/04.jpg" data-alt="Iceberg" data-lightbox="image-1" data-title="It was amazing to see an iceberg up close, it was so cold but didn’t snow today. "><img src="photos/thumbnails/04.jpg" alt="Image 4"></a>
  <a href="photos/05.jpg" data-alt="Desert" data-lightbox="image-1" data-title="The red cliffs were beautiful. It was really hot in the desert but we did a lot of walking through the canyons."><img src="photos/thumbnails/05.jpg" alt="Image 5"></a>
  <a href="photos/06.jpg" data-alt="Fall" data-lightbox="image-1" data-title="Fall is coming, I love when the leaves on the trees start to change color."><img src="photos/thumbnails/06.jpg" alt="Image 6"></a>
  <a href="photos/07.jpg" data-alt="Plantation" data-lightbox="image-1" data-title="I drove past this plantation yesterday, everything is so green!"><img src="photos/thumbnails/07.jpg" alt="Image 7"></a>
  <a href="photos/08.jpg" data-alt="Dunes" data-lightbox="image-1" data-title="My summer vacation to the Oregon Coast. I love the sandy dunes!"><img src="photos/thumbnails/08.jpg" alt="Image 8"></a>
  <a href="photos/09.jpg" data-alt="Countryside Lane" data-lightbox="image-1" data-title="We enjoyed a quiet stroll down this countryside lane."><img src="photos/thumbnails/09.jpg" alt="Image 9"></a>
  <a href="photos/10.jpg" data-alt="Sunset" data-lightbox="image-1" data-title="Sunset at the coast! The sky turned a lovely shade of orange."><img src="photos/thumbnails/10.jpg" alt="Image 10"></a>
  <a href="photos/11.jpg" data-alt="Cave" data-lightbox="image-1" data-title="I did a tour of a cave today and the view of the landscape below was breathtaking."><img src="photos/thumbnails/11.jpg" alt="Image 11"></a>
  <a href="photos/12.jpg" data-alt="Blueballs" data-lightbox="image-1" data-title="I walked through this meadow of bluebells and got a good view of the snow on the mountain before the fog came in."><img src="photos/thumbnails/12.jpg" alt="Image 12"></a>
</div>

Опция 2: Или вы можете использовать filter для фильтрации a элементов, например: 

$("#site-search").keyup(function() {
  let searchInput = $("#site-search").val().toLowerCase();
  $('.images-container > a').hide().filter(function() {
    return $(this).attr('data-title').toLowerCase().includes(searchInput);
  }).show();
});


$("#site-search").keyup(function() {
  let searchInput = $("#site-search").val().toLowerCase();
  $('.images-container > a').hide().filter(function() {
    return $(this).attr('data-title').toLowerCase().includes(searchInput);
  }).show();
});
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<input type="search" id="site-search" placeholder="Search(16pt)">

<div class="images-container">
  <a href="photos/01.jpg" data-alt="Hay Bales" data-lightbox="image-1" data-title="I love hay bales. Took this snap on a drive through the countryside past some straw fields."><img src="photos/thumbnails/01.jpg" alt="Image 1"></a>
  <a href="photos/02.jpg" data-alt="Lake" data-lightbox="image-1" data-title="The lake was so calm today. We had a great view of the snow on the mountains from here."><img src="photos/thumbnails/02.jpg" alt="Image 2"></a>
  <a href="photos/03.jpg" data-alt="Canyon" data-lightbox="image-1" data-title="I hiked to the top of the mountain and got this picture of the canyon and trees below."><img src="photos/thumbnails/03.jpg" alt="Image 3"></a>
  <a href="photos/04.jpg" data-alt="Iceberg" data-lightbox="image-1" data-title="It was amazing to see an iceberg up close, it was so cold but didn’t snow today. "><img src="photos/thumbnails/04.jpg" alt="Image 4"></a>
  <a href="photos/05.jpg" data-alt="Desert" data-lightbox="image-1" data-title="The red cliffs were beautiful. It was really hot in the desert but we did a lot of walking through the canyons."><img src="photos/thumbnails/05.jpg" alt="Image 5"></a>
  <a href="photos/06.jpg" data-alt="Fall" data-lightbox="image-1" data-title="Fall is coming, I love when the leaves on the trees start to change color."><img src="photos/thumbnails/06.jpg" alt="Image 6"></a>
  <a href="photos/07.jpg" data-alt="Plantation" data-lightbox="image-1" data-title="I drove past this plantation yesterday, everything is so green!"><img src="photos/thumbnails/07.jpg" alt="Image 7"></a>
  <a href="photos/08.jpg" data-alt="Dunes" data-lightbox="image-1" data-title="My summer vacation to the Oregon Coast. I love the sandy dunes!"><img src="photos/thumbnails/08.jpg" alt="Image 8"></a>
  <a href="photos/09.jpg" data-alt="Countryside Lane" data-lightbox="image-1" data-title="We enjoyed a quiet stroll down this countryside lane."><img src="photos/thumbnails/09.jpg" alt="Image 9"></a>
  <a href="photos/10.jpg" data-alt="Sunset" data-lightbox="image-1" data-title="Sunset at the coast! The sky turned a lovely shade of orange."><img src="photos/thumbnails/10.jpg" alt="Image 10"></a>
  <a href="photos/11.jpg" data-alt="Cave" data-lightbox="image-1" data-title="I did a tour of a cave today and the view of the landscape below was breathtaking."><img src="photos/thumbnails/11.jpg" alt="Image 11"></a>
  <a href="photos/12.jpg" data-alt="Blueballs" data-lightbox="image-1" data-title="I walked through this meadow of bluebells and got a good view of the snow on the mountain before the fog came in."><img src="photos/thumbnails/12.jpg" alt="Image 12"></a>
</div>
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